20 Sir C. Lyell on the Mineral Waters of Bath. 
lions of this water, which have been analyzed by Professor — 
illiam Allen Miller, F.R.S., who finds that the quantity of” 
lid matter is so great as to exceed by more than four times 
the proportion of that yielded by the Bath waters.’ Its compo 
sition is also in many respects very different ; for it contains but 
little sulphate of lime, and is almost free from the salts of mag- 
nesium. Itis rich in the chlorids of calcium and sodium, and 
it contains one of the new metals—cesium, never before dete 
trum nite he gave me an opportunity of seeing the bea 
tiful bright crimson lines which the lithium eroded in ihe 
spectrum. 
Lithium was first made known in 1817 by Arfvedson, who 
rare, until Bunsen and Kirchhoff, in 1860, by means of spectrum 
analysis, showed that it was a most widely diffused substan 
existing in minute quantities in almost all mineral waters, @ 
in the sea, as well as in milk, human blood, and the ashes of 
some plants. It has already been used in medicine, and we ma. 
therefore hope that, now that it is obtainable in large quantiti 
and at a much cheaper rate than before the Wheal-Clifford hot 
page was analyzed, it may become of high value. According 
a 
ais Wheal-Clifford spring yields no less than 250 gallons per 
minute, which is almost equal to the discharge of the King 
Bath or chief spring of this city. As to the gases — ne 
are the same as Ste of the Bath water—namely carboni 
oxygen, and nitro 
Mr. Wa rington ‘Sinyth, who had already visited the Wheels 
te waters is tin to gh by more y teesty, The 2 Whe i 
ford lode i 
“ See for the anillyala’ Ws Tint Vihar of sien Fae 
